Film coating liquid of freshly-cut square bamboo shoots and film-coating controlled atmosphere fresh-keeping method of freshly-cut square bamboo shoots

Abstract

The invention discloses film coating liquid of freshly-cut square bamboo shoots and a film-coating controlled atmosphere fresh-keeping method of the freshly-cut square bamboo shoots and belongs to thetechnical field of food fresh keeping. The film coating liquid of the freshly-cut square bamboo shoots, disclosed by the invention, is prepared from the following components in percentage by mass: 2to 4 percent of chitosan, 0.2 to 0.6 percent of streptococcus lactis peptide, 0.1 to 0.5 percent of sodium dehydroacetate, 0.2 to 0.6 percent of sodium diacetate, 0.2 to 0.6 percent of potassium sorbate and the balance of sterilized drinking water. The film-coating controlled atmosphere fresh-keeping method disclosed by the invention comprises the steps of peeling bamboo shoots, carrying out fixation on the bamboo shoots, cooling the bamboo shoots, coating a film on the bamboo shoots, drying the bamboo shoots by blowing, carrying out controlled atmosphere packaging on the bamboo shoots, filling cages with the bamboo shoots, carrying out fresh-keeping storage in a controlled atmosphere warehouse and the like. By adopting the method disclosed by the invention, the number of times of breathing of the bamboo shoots is reduced so that pathogenic bacterium type corruptive microorganisms in the bamboo shoots are at a dormant state and the microorganisms are stabilized in cell membranes of thebamboo shoots and are deactivated to form a fresh-keeping effect; a controlled atmosphere medium is added so that the integrity of a natural shape of the bamboo shoots can be enhanced and the stability of nutrient substances in the bamboo shoots is improved.

Description

technical field [0001] The invention relates to a coating liquid for freshly prescribed bamboo shoots and a method for coating the coating with modified atmosphere and belongs to the technical field of food preservation. Background technique [0002] According to Li Shizhen's "Compendium of Materia Medica" in the Ming Dynasty, "bamboo shoots are square and thick, hard and brittle, and these shoots are specially stored and eaten regularly, and they have the function of prolonging life." In addition, the square bamboo shoots are tender and thick in flesh, delicious in color, and come from the pollution-free mountains. They can be called mountain delicacy. Square bamboo mainly grows in plateau mountainous areas at an altitude of 1,400 to 2,500 meters. It is square in shape, with edges and corners. Its bamboo shoots do not grow in spring but luxuriate in autumn. In the world, it is only produced in Jinfo Mountain National Primitive Ecological Nature Reserve, Nanchuan District, ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problems of the existing fresh-preserved bamboo shoots for fresh-keeping storage, the present invention provides a coating liquid for fresh-prescribed bamboo shoots and a method for preserving fresh-keeping of the coating under modified atmosphere. Better keep the color and luster, crispness and freshness of the freshly prescribed bamboo shoots; adding L ascorbic acid can prevent the oxidation of the freshly prescribed bamboo shoots in this method, and improve the astringent taste of the freshly prescribed bamboo shoots; After the reaction of the freshly prescribed bamboo shoots delivered by the inert medium in the packaging bag, the freshly prescribed bamboo shoots reduce the number of breaths so that the pathogenic fungi and spoilage microorganisms in the freshly prescribed bamboo shoots are in a dormant state, and the dormancy of the freshly prescribed bamboo shoots stabilizes the microorganisms. In the cell membrane of the freshly prescribed bamboo shoots, it loses its activity to form a fresh-keeping effect; the addition of the modified atmosphere medium can enhance the integrity of the natural form of the freshly prescribed bamboo shoots and improve the stability of the substances in the freshly prescribed bamboo shoots